Question

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what is the point at which the weight of rigid object can be considered to act when producing a torque on the object?
the center of torque.
the center of inertia.
the center of force.
the center of gravity.

Explanation:

The center of gravity is the point where the weight of an object can be considered to act when calculating torques. The center of inertia is related to mass distribution for rotational inertia. There is no standard "center of torque" or "center of force" concept in this context.

Answer:

The center of gravity.